[Bilateral abscess of the psoas and systemic lupus erythematosus].

Herein we describe a patient with systemic lupus erythematosus and bilateral psoas abscess, an uncommon condition caused by septic metastases from ulcerous necrotic lesions involving both lower limbs. We describe the clinical features and the complementary work up, which included ultrasound. Similarly, treatment is described, as well as the results yielded by bacteriologic analyses of pus specimen. The literature is reviewed, highlighting the most important criteria.